Oh yikes, I hate to say it, but said former client sounds like a douche bag. Unfortunately there are lots of them out there. Clueless. That must have been hard on you to have that last beardie die on you like that. I have a friend in small mammal rescue, and she has had some heartbreaking experiences. But she keeps at it with the attitude ‘you can’t save them all.’ But you can save some, and that is the whole point.